You can place Cash Buy Orders from:
1. NRO PIS
2. NRE PIS
You can place Cash Sell Order from:
1. NRO PIS
2. NRE PIS
3. NRO NON-PIS (For shares allotted through Direct subscription route i.e. IPO)
4. NRE NON-PIS (For shares allotted through Direct subscription route i.e. IPO)